EP 0370208 B1 19921216 - BLOCKING DEVICE FOR THE CASTORS OF MOVING APPLIANCES, PARTICULARLY HOSPITAL BEDS
Title (en)
BLOCKING DEVICE FOR THE CASTORS OF MOVING APPLIANCES, PARTICULARLY HOSPITAL BEDS
Publication
Application
Priority
DE 3837307 A 19881103
Abstract (en)
[origin: CA2001530A1] APPARATUS FOR MOVABLY SUPPORTING BEDS AND THE LIKE The legs of a hospital bed are mounted on discrete casters with brakes for the wheels and blocking devices for the wheel frames. The wheel frames can be unblocked to swivel in their carriers which are mounted in or on the respective legs, and contain cylinders for vertically movable plungers serving to engage or disengage the respective brakes as well as to activate or deactivate the blocking devices. At least two plungers are movable to three different positions in one of which the respective wheels are free to rotate and the respective frames are free to swivel, in another of which the wheels are braked and the frames are blocked, and in the third of which the wheels are free to rotate but the frames are blocked. This is achieved by the provision of a control system employing discrete cylinder and piston units for the casters and conduits which can supply metered quantities of hydraulic fluid from the cylinders of the respective units to the cylinders in the corresponding carriers or vice versa. The pistons of all cylinder and piston units are biased against a common indexible cam.
IPC 1-7
IPC 8 full level
B60B 33/02 (2006.01); A61G 7/05 (2006.01)
CPC (source: EP US)
A61G 7/0528 (2016.10 - EP US); B60B 33/021 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH FR GB IT LI NL SE
DOCDB simple family (publication)
DE 3837307 C1 19891109; AU 4392289 A 19900510; AU 619610 B2 19920130; CA 2001530 A1 19900503; EP 0370208 A1 19900530; EP 0370208 B1 19921216; FI 89338 B 19930615; FI 89338 C 19930927; FI 895157 A0 19891031; JP H02171302 A 19900703; US 4998320 A 19910312
DOCDB simple family (application)
DE 3837307 A 19881103; AU 4392289 A 19891031; CA 2001530 A 19891026; EP 89118305 A 19891003; FI 895157 A 19891031; JP 28510289 A 19891102; US 43144189 A 19891101